Flickering on screen while maximized window

Flickering on screen while maximized window

What I expected to happen was...:
I expected that everything is fine (no flickering)

What actually happened was...:
Started game (no flickering)
Started world(created with 13w03a) (ui and far blocks and near signs are flickering)

It is also flickering in survival with a new created world. It is flickering only with maximized window. in fullscreen and smaller than maximized its all fine
my screen resolution is 1920x1080, no mods installed
i've tested to turn of all graphic enhancements such like advanced opengl etc. but without it it only gets even more worse

hope you understand what I am writing here (german guy)